Home / 21,876.65-30,179.27-14,319.65

Finding the Fourth Proportional to 21,876.65, 30,179.27 and 14,319.65

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Solution

The fourth proportional to 21,876.65, 30,179.27 and 14,319.65 is: 19,754.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,876.65 : 30,179.27 = 14,319.65 : x
  2. Step 2: Convert to fraction form
    21,876.65/30,179.27 = 14,319.65/x
  3. Step 3: Cross multiply
    21,876.65x = 30,179.27 × 14,319.65
  4. Step 4: Simplify right side
    21,876.65x = 432,156,361.16
  5. Step 5: Solve for x
    x = 432,156,361.16/21,876.65
  6. Step 6: Final answer
    x = 19,754.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.